Mr. G has 20 hats.

• 3 of his hats are red.
• He has 1 fewer yellow hat than red hats.
• He has 1 more blue hat than red hats.
• To find the number of green hats, add the number of yellow hats to the number of blue hats.
• The rest of his hats are orange.

How many of each color hat does Mr. G have?

(solution)